Cotter-key puller



April -2, 1929. c. H. BUCKLE COT'IBR KEY FULLER Filed April 30, 1925 Patented Apr. 2, 1929.

* UNITED STATES 1,707,842 PATENT OFFICE. I

CARL BUCKLE, OI CROCKETT, TEXAS, ASSIGNQR OF ONE-HALF TO G. R. IOPHAIL, OI MAGNOLIA, TEXAS.

COTTER-KEY FULLER.

This invention has for one of its objects to provide a novel, simple and inexpensive tool by means of which cotter keys can be readily pulled from the parts through which they pass without first straightening the butt ends thereof. 7 A further object of the invention is the provision of a tool of the character stated which shall be especially adapted for pulling cotter keys located in confined places and diflicult of access.

A still further object of the invention is the provision of a tool of the character stated which shall embody a construction adapted to prevent the pulled cotter key from becoming accidentally detached therefrom.

The foregoing and other objects are attained by the novel construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawing, wherein} Figure 1 is a View in side elevation of a cotter key pulling tool constructed in accordance with my invention.

Figure 2 is a top plan view of the tool,

Figure 3 is a bottom plan view on an enlarged scale of the front end of the tool, and

Figure 4 is a detail sectional view taken on the plane indicated by the line 4-4 of Figure 1.

Corresponding and similar parts are referred to in the following description, and designated in the several views of the accompanying drawing, by similar reference charactors.

The tool comprises a metal rod 1 provided at its'rear end with a downwardly and rearwardly directed extension 9. and at its front end with a forwardly directed fork 3. Pieces 4 of wood. are secured to the opposite sides of the extension 2 and are of such formation as to provide a handle of the pistol grip type. A guide tube 5 secured to the upper side of the rod 1 slidably supports a rodG. The guide tube 5 extends longitudinally of the rod 1 and is located adjacent the forward end thereof. The rod 6 is provided at its front end with a hook 7 and has its rear end portion upwardly offset with respect to the rod 1. An upwardly extending lever 9 has its lower end connected to the rod 1 by a pivot 10, and the rear end of the rod 6 is connected to the lever intermediate the ends of the latter by a thumb screw 11.

The rod 1 constitutes the relatively stathe bent ends thereof.

spect to the member 1 through the medium of Y i the lever 9. To extract or pull a cotter key by means of this tool, the lever 9 is rocked forwardly to position the hook 7 forwardly beyond the fork 3 in order to permit the hook to be readily inserted in or engaged with the eye of the cotter key. After this has been done the lever 9 is slowly-rocked ina rearward direction until the fork 3 contacts with the nut or bolt through which the cotter key passes. By exerting a forward pressure on the handle 4 so as to hold the fork 3 in contact with the nut or bolt, and using the engagement of the fork with the nut or bolt as a purchase, by imparting a further rearward movement to the lever 9, the cotter key will be extracted or pulled from the nut or bolt through which it passes and the eye end thereof carried into the forward end of the tube 5. The cotter key may be readily disengaged from the hook 7 by rocking the lever 9 in a direction to carry the hook forwardly beyond the tube 5 and by thence sliding the cotter key offof the hook. It should thus be understood that by means of the tool a cotter key may be readily pulled without first straightening The tool is especially useful for removing the cotter key from the number four connecting rod of a Ford motor and from other parts and accessories of the motor. key cannot, after being pulled, become accidentally detached from the tool there is no possibility of its falling into the crank case of the motor which often happens when cotter keys are removed by pliers and which involves considerable time and labor as the cotter key must be removed from the crank case in order to prevent its damaging the motor. The tool is also especially adapted for removing the cotter keys from the clutch of the Ford motor and when used obviates any As the cotter liability of dropping a cotter key into the transmission.

It should be understood that the drawing is merely illustrative and does not pretend to give exact proportions. Furthermore, the said drawing is illustrative of a preferred construction, it being my expectation that various changes and modifications may be made without departing from the spirit and scope of the invention.

What is claimed'is V 1. A toolfor )ulhn cotter kc s oom 3115- 1 e b 0 mg a relatlvely stationary member provided at its front end With a fork to abut the article. fastened and at its rear GDCtWitllit handle, a v

relatively movable member provided, at its front end withahook disposed 1n a plane above the fork and relatively close to the latter, said hook being pronounced and at its bill being Capable of overlapping said fork, and a lever pivoted to the first named member and having the'second named member pivotally conat its front end with a flat fork to abut the article fastened and at its rear end With a handle, a lever pivoted at one end to said member and extending upwardly therefrom, a guide secured tohthe upper side of said member, and a relatively movable member passing through the guide and provided at its front end with a hook disposed in a plane above the fork and relatively close to the latter and having its rear end offset and pivoted to the lever, said hook being pronounced and at itsbill being Capable of overlapping said fork.

In testimony whereof I affix my sigi'iature.

CARL I-I. BUCKLE. 

